Henry Clay Democratic-Republican Henry Clay Democratic-Republican The 1816–17 United States House of Representatives elections were held on various dates in various states between April 30, 1816, and August 14, 1817.

The size of the House increased to 184 after Indiana and Mississippi achieved statehood.

The Democratic-Republican Party entered the election with a large majority, yet made sizable gains, helping trigger the virtually nonpartisan Era of Good Feelings under new President James Monroe, elected in 1816.

Two major events combined to help eliminate the declining Federalist Party from meaningful contention.

First, the War of 1812 had concluded in 1815 with a feeling of national pride and relief, with the small American military fighting the much more powerful British forces to a draw punctuated by General Andrew Jackson's dramatic victory at the Battle of New Orleans.

The effects severely damaged the agricultural economy of New England, where Federalist support was strongest, causing privation, popular discontent, and mass emigration westward.

In five districts this was not met on the first election, requiring additional trials to be held.

Mississippi was admitted as a state on December 10, 1817[15] from the western half of the former Mississippi Territory (the eastern half became Alabama Territory) It elected its first representative to Congress August 4–5, 1817.

Vermont elected its members September 3, 1816, replacing its six Federalists with six Democratic-Republicans.